请考虑在配置中定义一个类型为“org.springframework.jdbc.core.JdbcTemplate”的Bean

dfuffjeb  于 2022-11-05  发布在  Spring
关注(0)|答案(5)|浏览(203)

软件包名称：com.sample
SpringMain.java

@SpringBootApplication
@ComponentScan
public class SpringMain implements CommandLineRunner
{
    @Autowired
    SampleClass sampleClass;

    public static void main(String[] args) {
        SpringApplication.run(SpringMain.class, args);

    }

    @Override
    public void run(String... args) throws Exception 
    {
        sampleClass.callThread();
    }
}

软件包名称：com.sample.infra
SampleClass.java

@Component
public class SampleClass 
{

    @Autowired
    ThreadSample threadSample;

    public void callThread()
    {
        System.out.println("Inside SampleClass");
        threadSample.start();
    }
}

软件包名称：com.sample.dao
ThreadSample.java

@Component
public class ThreadSample extends Thread
{
    @Autowired
    JdbcTemplate jdbcTemplate;

    public void run()
    {
        init();
    }

    public String init()
    {
        System.out.println("Inside ThreadSample");
        SimpleJdbcCall jdbcCall = new SimpleJdbcCall(jdbcTemplate).withProcedureName("sp_procedureName");

        Map<String, Object> initiatorMapData = jdbcCall.execute();

        JSONArray initiatorJSONArray = JSONArray.fromObject(initiatorMapData.get("#result-set-1"));

        System.out.println("GetInitiators JSONArray: "+initiatorJSONArray);

        return initiatorJSONArray.toString();
    }
}

application.properties


# DB Credentials

spring.datasource.url=jdbc:jtds:sqlserver://1.12.13.14
spring.datasource.username=uname
spring.datasource.password=pwd

pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>springBoot</groupId>
  <artifactId>springBoot</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <properties>
        <java.version>1.8</java.version>
    </properties>

  <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.10.RELEASE</version>
    </parent>

    <dependencies>
     <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
         <exclusions>
            <exclusion>
                <artifactId>tomcat-annotations-api</artifactId>
                <groupId>org.apache.tomcat</groupId>
            </exclusion>
            <exclusion>
                <artifactId>tomcat-embed-core</artifactId>
                <groupId>org.apache.tomcat.embed</groupId>
            </exclusion>
            <exclusion>
                <artifactId>tomcat-embed-el</artifactId>
                <groupId>org.apache.tomcat.embed</groupId>
            </exclusion>
            <exclusion>
                <artifactId>tomcat-embed-websocket</artifactId>
                <groupId>org.apache.tomcat.embed</groupId>
            </exclusion>
         </exclusions>
     </dependency>

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>net.sourceforge.jtds</groupId>
            <artifactId>jtds</artifactId>
            <version>1.3.1</version>
        </dependency>

<dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>

          <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

现在，当我把所有文件放在一个包下，它工作正常。但当我根据功能分发，然后发生错误。我该如何解决这个问题。
按照下面的建议添加基础包后，我收到了如下错误

.   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::       (v1.5.10.RELEASE)

2018-04-25 11:37:33.615  INFO 11552 --- [           main] com.sample.SpringMain                    : Starting SpringMain on Computer with PID 11552 (D:\SpringExample\springBoot\target\classes started by User in D:\SpringExample\springBoot)
2018-04-25 11:37:33.617  INFO 11552 --- [           main] com.sample.SpringMain                    : No active profile set, falling back to default profiles: default
2018-04-25 11:37:33.655  INFO 11552 --- [           main] s.c.a.AnnotationConfigApplicationContext : Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@2f490758: startup date [Wed Apr 25 11:37:33 IST 2018]; root of context hierarchy
2018-04-25 11:37:34.370  WARN 11552 --- [           main] o.h.v.m.ParameterMessageInterpolator     : HV000184: ParameterMessageInterpolator has been chosen, EL interpolation will not be supported
2018-04-25 11:37:34.559  WARN 11552 --- [           main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'asynchronousService': Unsatisfied dependency expressed through field 'taskExecutor'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.core.task.TaskExecutor' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
2018-04-25 11:37:34.564  INFO 11552 --- [           main] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-04-25 11:37:34.626 ERROR 11552 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************

APPLICATION FAILED TO START

***************************

Description:

Field taskExecutor in com.sample.dao.AsynchronousService required a bean of type 'org.springframework.core.task.TaskExecutor' that could not be found.

Action:

Consider defining a bean of type 'org.springframework.core.task.TaskExecutor' in your configuration.
spring-boot

5条答案

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2guxujil

2guxujil1#

我今天遇到了一个类似的问题，我通过创建DatabaseConfig类解决了这个问题

@Configuration
   public class DatabaseConfig {
      @Bean
      public DataSource dataSource(){
         DriverManagerDataSource dataSource = new DriverManagerDataSource();
         dataSource.setDriverClassName("com.mysql.jdbc.Driver");
         dataSource.setUrl("jdbc:mysql://localhost:3306/myDB");
         dataSource.setUsername( "root" );
         dataSource.setPassword( "" );
         return dataSource;
      }
   }

PS：我有一个MySQL数据库。你需要设置正确的驱动程序类和url

赞(0）分享  回复(0）举报  2022-11-09
fdx2calv

fdx2calv2#

添加以下内容：

@ComponentScan(basePackages={"com.sample"})
赞(0）分享  回复(0）举报  2022-11-09
rjee0c15

rjee0c153#

确保在pom.xml中添加了所有依赖项

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-quartz</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>com.oracle.database.jdbc</groupId>
            <artifactId>ojdbc8</artifactId>
            <scope>runtime</scope>
        </dependency>
    </dependencies>
赞(0）分享  回复(0）举报  2022-11-09
c86crjj0

c86crjj04#

移除
@ComponentScan
或将其修改为

@ComponentScan(basePackage="com.sample")
赞(0）分享  回复(0）举报  2022-11-09
bttbmeg0

bttbmeg05#

添加配置

@Bean
public TaskExecutor taskExecutor() {
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setCorePoolSize(5);
    executor.setMaxPoolSize(10);
    executor.setQueueCapacity(25);
    return executor;
}
赞(0）分享  回复(0）举报  2022-11-09
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